Update of /cvsroot/boost/boost/boost/interprocess/detail
In directory sc8-pr-cvs3.sourceforge.net:/tmp/cvs-serv21525
Modified Files:
atomic.hpp
Log Message:
PPC fixes
Index: atomic.hpp
===================================================================
RCS file: /cvsroot/boost/boost/boost/interprocess/detail/atomic.hpp,v
retrieving revision 1.3
retrieving revision 1.4
diff -u -d -r1.3 -r1.4
--- atomic.hpp 17 Feb 2007 11:39:41 -0000 1.3
+++ atomic.hpp 12 Apr 2007 17:01:54 -0000 1.4
@@ -135,20 +135,20 @@
asm volatile ("0:\n\t" // retry local label
"lwarx %0,0,%2\n\t" // load prev and reserve
- "add %1,%0,%3\n\t" // temp = prev + delta
+ "add %1,%0,%3\n\t" // temp = prev + val
"stwcx. %1,0,%2\n\t" // conditionally store
"bne- 0b" // start over if we lost
// the reservation
//XXX find a cleaner way to define the temp
//it's not an output
: "=&r" (prev), "=&r" (temp) // output, temp
- : "b" (mem), "r" (delta) // inputs
+ : "b" (mem), "r" (val) // inputs
: "memory", "cc"); // clobbered
return prev;
}
inline boost::uint32_t atomic_inc32(volatile boost::uint32_t *mem)
-{ return atomic_inc32(mem, 1); }
+{ return atomic_add32(mem, 1); }
inline boost::uint32_t atomic_read32(volatile boost::uint32_t *mem)
{ return *mem; }
@@ -162,25 +162,32 @@
"lwarx %0,0,%1\n\t" // load prev and reserve
"cmpw %0,%3\n\t" // does it match cmp?
"bne- 1f\n\t" // ...no, bail out
- "stwcx. %2,0,%1\n\t" // ...yes, conditionally
- store swap
- "bne- 0b\n\t" // start over if we lost
- the reservation
+ "stwcx. %2,0,%1\n\t" // ...yes, conditionally store the
'with' swapped value
+ "bne- 0b\n\t" // start over if we lost the
reservation
"1:" // exit local label
: "=&r"(prev) // output
- : "b" (mem), "r" (swap), "r"(cmp) // inputs
+ : "b" (mem), "r" (with), "r"(cmp) // inputs
: "memory", "cc"); // clobbered
return prev;
}
-inline void atomic_sub32(volatile boost::uint32_t *mem, boost::uint32_t val)
+inline boost::uint32_t atomic_sub32(volatile boost::uint32_t *mem,
boost::uint32_t val)
{
- boost::uint32_t old_value, new_value;
- do {
- old_value = *mem;
- new_value = old_value - val;
- } while (atomic_cas32(mem, new_value, old_value) != old_value);
+ boost::uint32_t prev, temp;
+
+ asm volatile ("0:\n\t" // retry local label
+ "lwarx %0,0,%2\n\t" // load prev and reserve
+ "sub %1,%0,%3\n\t" // temp = prev - val
+ "stwcx. %1,0,%2\n\t" // conditionally store
+ "bne- 0b" // start over if we lost
+ // the reservation
+ //XXX find a cleaner way to define the temp
+ //it's not an output
+ : "=&r" (prev), "=&r" (temp) // output, temp
+ : "b" (mem), "r" (val) // inputs
+ : "memory", "cc"); // clobbered
+ return prev;
}
inline boost::uint32_t atomic_dec32(volatile boost::uint32_t *mem)
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